Add CITATIONS.bib for academic users

[Copilot]

Academic users and practitioners writing research reports have no citable reference for jQuantStats. This adds the standard BibTeX artifact to close that gap.

Changes

• CITATIONS.bib — new file at repo root with a @software entry (author, title, URL, version, year, license)
• README.md — new 📝 Citing section (before License) with inline BibTeX snippet and a link to CITATIONS.bib

@software{jquantstats,
  author    = {Schmelzer, Thomas},
  title     = {jQuantStats: Portfolio Analytics for Quants},
  url       = {https://github.com/tschm/jquantstats},
  version   = {0.1.1},
  year      = {2026},
  license   = {MIT}
}

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add CITATIONS.bib for academic users</issue_title>
<issue_description>## Summary

Add a CITATIONS.bib file to the repository root:

@software{jquantstats,
  author    = {Schmelzer, Thomas},
  title     = {jQuantStats: Portfolio Analytics for Quants},
  url       = {https://github.com/tschm/jquantstats},
  version   = {0.1.1},
  year      = {2026},
  license   = {MIT}
}

Also add a Citing section to the README pointing to this file.

Why

Quant finance sits at the intersection of academia and industry. Practitioners writing research reports and academics publishing papers need a citable reference. This is a single file addition that unlocks a completely untapped audience and adds zero maintenance burden.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add CITATIONS.bib for academic users #420

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